Does Estrogen Blunt the Effects of Exercise Training on Glycemic Control
The Impact of 17beta-estradiol Treatment on Insulin Sensitivity, Immune Function, Inflammation and Skeletal Muscle Metabolism Following Exercise Training in Sedentary, Overweight Males
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Vito Pipitone, PhD Candidate
- Telefonnummer: 519-888-4567
- E-mail: vito.pipitone@uwaterloo.ca
Studiesteder
-
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Ontario
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Waterloo, Ontario, Canada, N2L 3G1
- University of Waterloo
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Kontakt:
- Vito Pipitone, PhD Candidate
- Telefonnummer: 519-888-4567
- E-mail: vito.pipitone@uwaterloo.ca
-
Ledende efterforsker:
- Michaela Devries-Aboud, PhD
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Underforsker:
- Vito Pipitone, PhD Candidate
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Underforsker:
- Emma Dare, PhD
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Underforsker:
- Madeline Noble, MSc
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Underforsker:
- Sean Gartner, MD
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Biological males (with no previous hormonal supplementation).
- Between the ages of 18-35 years old
- Non-smokers
- Sedentary individuals (i.e., engaging in intentional moderate-to-vigorous physical activity <2x/week)
- Body mass index 27-32 kg/m2
- Body fat % > 22%
Exclusion Criteria:
- Any state that can impact the hormonal milieu (e.g., drug/hormonal supplementation related to health).
- Usage of anti-inflammatory medications, >1 glucose lowering medications, insulin, platelet inhibitors, anti-coagulant medications or simvastatin, beta-blockers, weight loss medications (Orlistat, Saxenda, Contrave, Ozempic) or any medications known to affect protein metabolism (i.e., corticosteroids).
- Presence of cardiovascular, respiratory, metabolic, autoimmune or renal disease.
- Presence of any condition that makes the participant unable to participate in physical activity as determined using the CSEP Get Active Questionnaire.
- Presence of injury that restricts exercise performance.
- VO2max > 50th percentile for age.
- Previous (within the last 2 months) or current use of ergogenic aids (i.e. creatine).
- Previous or current use of weight loss medications, including liraglutide, semaglutide, orlistat, ozempic, etc.
- History and/or diagnosis of blood clots or family history of blood clot disorders.
- History of allergies or sensitivities to local anesthetic
- Ophthalmic vascular disease
- Classical migraines
- History of thromboembolic disease
- Consume 15 or more alcoholic drinks/week or 3 drinks per day
- Bleeding disorders
- Severe peripheral neuropathy
- Muscular dystrophy
- Prior bariatric surgery
- Osteoporosis/osteopenia
- Orthopaedic issues
- Presence of GI disorders (i.e., Colitis, Crohns disease, Celiac disease)
- Presence of liver disease or dysfunction (i.e., diagnosed NAFLD, NASH, cirrhosis, previous liver transplant)
- History of cancer
- Type 1 or 2 diabetes
- Presence of renal disorders (creatinine > 140)
- Uncontrolled hypertension (>140/90 mmHg)
- History of allergies or sensitivities to estradiol or to any ingredient in the formulation or component of the container
- History and/or diagnosis of blood clots or family history of blood clot disorders
- Have an implantable electronic device
- Medical psychiatric history of depression, bipolar, anxiety, suicidal ideation, etc.
- Inherited clotting disorders
- Chest pain or shortness of breath
- Inflammatory disorders (e.g., inflammatory bowel disorder)
- Significant weight loss in the 3-month period prior to the study (10% of total body weight)
- Any kind of major surgery recently
- Bleeding disorders
- Active or history of thromboembolic disease (including confirmed venous thromboembolism)
- Ophthalmic vascular disease
- Classical migraines
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Tredobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Estrogen
1mg/d 17-beta estradiol x 2 day and 2mg/d 17-beta estradiol for 14 days
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2 weeks of high intensity interval training while either taking estrogen or placebo
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Placebo komparator: Placebo
400mg/d of glucose polymer x 16 days
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2 weeks of high intensity interval training while either taking estrogen or placebo
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Glucose AUC
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
|
Glucose AUC determined from blood samples taken during a 2h oral glucose tolerance test
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Visit 3 (baseline) and Visit 11 (Day 16)
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Insulin resistance/sensitivity
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
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at rest (HOMA-IR) and during a 2 h oral glucose tolerance test (Matsuda index)
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Markers of insulin signaling
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
|
Western blot of the following markers: AMPKα Thr172 & total AMPKα; phosphorylated Akt Ser437 & total Akt; phosphorylated TBC1D4 Thr642 & total TBC1D4; phosphorylated TBC1D1 Ser237 & total TBC1D; total GLUT4 in human skeletal muscle in the fasted and insulin stimulated state
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Membrane bound GLUT4
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
|
GLUT4 content at the membrane in the fasted and insulin stimulated state (determined via immunofluorescence)
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
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Peripheral blood mononuclear cells
Tidsramme: Visit 2 (baseline) and Visit 10 (Day 14)
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determination of immune cell response to acute exercise
|
Visit 2 (baseline) and Visit 10 (Day 14)
|
|
Plasma cytokines from isolated PBMCs
Tidsramme: Visit 2 (baseline) and Visit 10 (Day 14)
|
pro- and anti-inflammatory cytokine content will be determine using a cytokine array and commercially available kits
|
Visit 2 (baseline) and Visit 10 (Day 14)
|
|
Mitochondrial content
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
|
determined using electron microscopy
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Mitochondrial respiration
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
|
skeletal muscle mitochondrial respiration determined using high-resolution respirometry
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
intramyocellular lipid (IMCL) content
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
|
total and subcellular location-specific content and storage characteristics
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
aerobic fitness (VO2max)
Tidsramme: Visit 2 (baseline) and Visit 10 (Day 14)
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VO2max determined during a graded exercise test
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Visit 2 (baseline) and Visit 10 (Day 14)
|
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Sex hormone concentrations
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
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Serum estradiol measured using commercially available kits
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Visit 3 (baseline) and Visit 11 (Day 16)
|
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Serum hormone concentrations
Tidsramme: Visit 3 (baseline) and Visit 11 (Day 16)
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Serum progesterone measured using commercially available kits
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
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Sex hormone concentrations
Tidsramme: Visit 3 (baseline) and Visit 11 (day 16)
|
Serum testosterone measured using commercially available kits
|
Visit 3 (baseline) and Visit 11 (day 16)
|
|
Serum hormone concentrations
Tidsramme: Visit 2 (baseline) and visit 10 (day 14)
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Serum growth hormone measured using commercially available kits prior to a maximal graded exercise test and immediately (t=0 min), 30 and 60 min after the graded exercise test.
|
Visit 2 (baseline) and visit 10 (day 14)
|
|
Serum hormone concentrations
Tidsramme: Visit 2 (baseline) and visit 10 (Day 14)
|
Serum glucagon measured using commercially available kits prior to a maximal graded exercise test and immediately (t=0 min), 30 and 60 min after the graded exercise test.
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Visit 2 (baseline) and visit 10 (Day 14)
|
|
Neurotransmitter concentration
Tidsramme: Visit 2 (baseline) and Visit 10 (day 14)
|
Serum epinephrine concentration measured using a commercially available kit prior to a maximal graded exercise test and immediately (t=0 min), 30 and 60 min after the graded exercise test.
|
Visit 2 (baseline) and Visit 10 (day 14)
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Michaela Devries, PhD, University of Waterloo
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Metaboliske sygdomme
- Glukosemetabolismeforstyrrelser
- Hyperinsulinisme
- Ernæringsmæssige og metaboliske sygdomme
- Insulin resistens
- Motorisk aktivitet
- Bevægelse
- Muskuloskeletale fysiologiske fænomener
- Muskuloskeletale og neurale fysiologiske fænomener
- Farmaceutiske præparater
- Undersøgelsesteknikker
- Teknologi, farmaceutisk
- Øvelse
- Doseringsformer
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 46726
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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